Magazine-pencil



H.- P. FAIRCHILD.

MAGAZINE PENCIL.

APPLICATION FILED APR-5, 1911.

Patented July 6, 1920.

5] wuewto'a 3 $51 alto 1,140

55 a hollow tapered or conical tip 11, the two UNITED STATES PATENT o 1='I-*Ici-:.f v

HARRY P. FAIR CI-IIL1),' on NEW YORK, N. Y.

MAGAZINEQII'QENCIL.

Specification of Letters Patent.

To all whom it may concern.-

Be it known'that I, HARRY P. FAIRCHILD, a citizen of the United States, residing at New York, in the county and State of New York, have invented certain new and use 'ful Improvements in Magazine-Pencils, of

which the following is a full, clear, and exact description.

This invention relates to lead pencils of the so-called magazine type, preferably a pencil of the type that propels and also retracts (or repels) the lead, and its chief object is to provide in the body of the pencil a convenient and simple magazine for storing additional leads. Another object is to provide a pencil of the type indicated with a magazine which in no way complicates the lead-actuating mechanism, but c ooperates therewith in such manner as to materially strengthen the same. A further object is to provide a pencil of simple and reliable construction which can be manufactured at reasonable cost. To these and other ends the invention consists of the novel features of construction and combinations of elements hereinafter described.

Of the various embodiments of which the invention is capable I have selected for illustration and specific description herein the one that at thepresent time is believed to exhibit the invention in its most convenient and effective form. This embodiment is shown in the accompanying drawing, in which Figure l'illustrates the outer appearance of the complete pencil.

Fig. 2 is a longitudinal section of the complete pencil, on a larger scale than that of i 1. Fig. 3 is a detail side View, on about the same scale as Fig. 2, of the helically slotted tube or cylinderv used in the actuating mechanism.

Fig. 4 is a cross section on line 4-4 of Fig. 2. I Fig. 5 is a detail side view of the magazine sleeve, showing the same attached to the helically slotted tube or cylinder of;

Fig. 3.

Fig. 6 is a detail perspective view of the rear end of the pencil, showing the lead magazine opened .by removal of the knob.

The outer'casing or barrel 10 may be made of gold, silver, or any other suitable metal or material, and in its forward end is fitted respect to the other. helical slot 20, into which the-lugs 16' and 18 being axially alined and so fitted that either can rotate with respect to the other.

The lead actuating mechanism is preferably, but not necessarily, of both the propelling and repelling type, and-in the pres- Patented July 6, 1920.

cut embodiment of the invention comprises I a tubular guide 12 extending longitudinally 'of the barrel and co-axial therewith, and

provided with a longitudinal slot 13.. In the guide .is a short tube 14 co carrier for the lead 15, the latter being inserted in the forward end of the tube. At

its rear' end the carrier has a lug 16 extend ing radially through the guide slot 13. In the tube is a plunger 17, formed of a piece of wire with its rear end bent up to form a lug 18, which, like the lug 16, extends radially through the guide slot 13. Evidently, if the carrier 14 and plunger 17 are .shifted in the guide 12 in unison, that is, both moving together, the lead will be advanced, or retracted, as the case may be; but if the plunger is shifted forwardly (toward the left in Fig. 2) in the carrier it will push the lead out of the can rier, leaving the latter ready to receive a fresh "piece of'le'ad when the plunger is retracted. From this function of the plunger it may be conveniently termed an ejector; its. purpose being to eject the small bit of lead that is left behind in the carrier when the lead is accidentally broken off. To

' actuate the carrier and ejector as described,

a sleeve or tube 19 isprovided, encircling the guide tube 12 and fittingthe same snugly but permitting each to turn smoothly with The sleeve 19 has a project,-the latter being spaced apart in successive turns .of the helix, as clearly shown in Fig. '3. The forward end of the guide 12 is fixed to the tip 11 in any convenient way, and the actuating tube or sleeve 19 is rigidly connected to the barrel 10, preferably in the manner hereinafter described. It will therefore be clear that if the barrel is rotated relatively to the tip, thereby rotating the actuating tube or sleeve about the guide tube, the carrier 14 and ejector 17 will move together lengthwise of the pencil and the lead will be advanced or retracted according to the direction of the rotation. For the purpose of advancing and retracting the ejector with respect to the carrier, the outermost turn of the helical groove 20 is cut off fiat or square, as shown at 21 in'Fig. 3. Consenstituting the conveniently direction of rotation the ejector is of course retracted first, thus permitting a fresh lead to'be inserted into the now open end of the carrier. 1 I

At the forward end the actuating sleeve 19 bears against the tip 11, and at its rear end it is held by a collar 22 encircling the end of the guide 12, the collar being held in place by a pin 23. v It will be observed that the propelling and repelling mechanism, is considerably smaller in diameter-than the barrel, thus leaving an annular space inside the latter. Advantage is taken of this space to provide a magazine or receptacle for spare leads, and the device which is. employed for the purpose in the preferred form of the invention,

' in which the helically slotted tube 19 is disposed within the longitudinal slotted tube 12, is utilized to connect the helically slotted actuating sleeve 19 rigidly to the barrel and also to stiffen said sleeve thereby practically eliminating the give due to the presence of the slot. For the purpose indicated, I provide a tubular sleeve to encircle the propelling and repelling mechanism, preferably so shaped (in cross-sectional contour) as to provide a plurality of long narrow chambers for individual leads. In the. form shown the sleeve 24 is corrugated, giving it a star-shaped cross section, and is of such size as to fit the propelling and repelling helical slot in it at all.

'eration of the pencil to advance-or retract mechanism snugly while the points of the outer edges of the corrugations bear closely against the inner surface of the barrel 10. In the bottom of one of the grooves is a longitudinal slit 25, to expose .the'underlying slotted sleeve 19 when the parts are assembled, as in Fig. 5. The two are then secured rigidly together by small points or tacks of solder in the slit, as shown at 26, between successive turns of the helix. The magazine sleeve and the actuating sleeve thus become in effect one piece, and'the actuating sleeve is made as rigid and strong as if it had no In other words, op-

the lead .cannot twist the tube 19 or cause any lengthwise movement thereof. When the magazine sleeve and the lead-actuating mechanism are assembled. in the barrel, preferably with their rear ends flush, the sleeve is rigidly attached to the barrel, as by a drop of solder 27 Fig.6. The three parts,-

Fig. 3.

which actuates the plunger 17, is still in the helix or screw-slot, as indicated at 18, "Fig.

barrel 10, magazine sleeve 24:, and actuating tube 19,-are thus rigidly connected so that no movement of either can occur relatively to the others.

Rigidly fixed on the rear end of the tubular guide 12 is a short piece of tubing 28,

Figs. 2 and 6, threaded to receive a knob 29. The latter serves to close the lead-magazine and may also form an ornamental finish for the pencil. Upon unscrewing the knob the magazine chambers are accessible for removing or inserting the extra leads, as

indicated at 30, 1 1g. 6.

The magazine sleeve 24 is preferably made of metal, but it may be of non-metallic material, as cardboard or fiberboard, in which case it can be fastened to the slotted a'ctuating tube 19 and the barrel 10 in any convenient and suitable manner other than soldering, for example by means of rivets or screws, not shown.

To advance the lead the barrel 10 is rotated clockwise (as viewed from the rear end of the pencil) relatively to the tip, 11. This turns the magazine 24 and the helically slotted actuating tube 19 in the same. direction; and since the lugs 16 and 18 cannot turn with the sleeve 19 they mustmove out-' wardly in the'longitudinal slot 13, thus moving thelead-carrier 14 outwardly, as will be readily understood. Toretract the lead the barrel is turned counterclockwiserelatively to the tip 11, thereby moving the lead-carrier 14 backwardly. To eject the lead from the carrier the latter is advanced as far as it will go, by turning the barrel clockwise.

When the lug 16 reaches the fiat end of the ,tube or sleeve 19, further rotation of the latter ,(by turning the barrel) cannot advance lug 16, since the latteris then no longer engaged in the helix. Instead, it is left in the plane in which it "is shown at 16 On the other hand, the lug 18 3, and hence continues to advance as the barrel is turned. The lug 18 and plunger 17 therefor move outwardly relatively to the carrier. 14 and thus push the lead out of the latter. Reverse rotation of the barrel withdraws the plunger relative to the carrier until lug 16 is again in the screw slot, after which both the carrier and the plunger move back together. A fresh lead can then be inserted in the carrier.

It is to be understood thattheinvention is not limited to the details of construction herein described, as these can be varied widely without departing from the spirit of the invention as defined by the appended claims.

I claim: 1. A pencil of the class described, having relatively rotatable outer parts, lead-actuating mechanism, including a helically slotted will operate said mechanism.

e I sleeve or tube, a magazine for extra leads surrounding the sleeve or tube, fastened to the sleeve or tube between the turns of the slot whereby the sleeve or tube isstiifened and strengthened, and connected to one of the said outer parts of the pencil whereby rotation of such part rotates the sleeve.

2. A pencil-of the class described, comprising a barrel, lead actuatingmechanism in the barrel at the axis thereof and operated by relative rotary movement of its parts, a tapered tip forming the writing end of the pencil to which apart of the mechanism is connected, the barrel and tip being rotatable with, respect to each other; and

means surrounding the lead-actuating mechanism, serving as a magazlne to hold extra leads, andv as a directconnection between the barrel and a part of said mechanism whereby rotation of the barrel relatively to the tip 3. In a pencil of the class, described, in

combination, a central guide tube having alongitudinal slot, a lead-carrier movable longitudinally in said tube and having a lug extending radially into the slot, a rotary device surrounding the guide tube and engaging the lead-carrier lug to move the lead-carrier lengthwise in the guide tube, a rotatable magazine member to hold extra leads, sur-,

rounding and connected directly to the said rotary device to rotate the same, and means to rotate the magazine member.

4. In a pencil of the class axially alined barrel and writing tip-rotatable relatively to each other, a magazine for extra leads comprising a corrugated sleeve fitted in and secured to the barrel, lead actuating mechanism inside the sleeve and hav-- ing a rotary actuating member directly con-'- nected to the corrugated sleeve, and a removable closure for' the rear endof the sleeve.

5. In a pencil of the class described, an

axially alined barrel and a tapered tip,

forming the writing end of the pencil, ro-

tatable relatively to each other, a guide tube co-axial with the barrel-inside 'the same and having its forward end'fixed .to said tip, a

described, an

lead-carrier movable in said guide tube toadvance the lead, a rotary sleeve surrounding the guide tube and cooperating with the lead-carrier to actuate the same, combined with a magazine for extra leads surrounding said rotary sleeve and connected directly to the sleeve and to the barrel to rotate the former, and a closure remov'ably carried by the rear end of. the guide tube to close the rear end of the magazine.

6. In a magazine pencil, the combination with axially extending lead actuating mechanism, of a rotary magazine for extra leads surrounding said mechanism and directly connected thereto to actuate the same, and

of the barrel and movable longitudinally thereof; a long longitudinally slotted tube and a long helicallyslotted tubearrang'ed one insidejof the'other'and around the lead-." feeding member; a lug on' said member ex tending into the-slots in said tubes"; a writing tip rotatable relatively to the barrel at one end thereof and connected to the inner one of said tubes; and a magazine rigidly connected to the outer tube and surrounding the. same, extending substantially the full length of the barrel and rigidly connected therewith; whereby leads substantially as long as the barrel can be carried and used in the pencil.

HARRY P. FAIRCHILD.

In testimony whereof I aflix my signature. a 

